18 Questions Answered · Brevard County, FL
$10,000-50,000+ depending on use case. Basic flex space/office: $10-20K. Bedroom + bath suite: $20-35K. Plain-English answers from a contractor working in Brevard County every week.
$10,000-50,000+ depending on use case. Basic flex space/office: $10-20K. Bedroom + bath suite: $20-35K. Full ADU with kitchenette: $35-50K+. Done poorly (obvious conversion, no garage to sell to buyers who want one): can hurt resale 5-10% in some markets. We check zoning before quoting an ADU conversion.
Yes always. Brevard County requires building permit, plus electrical, plumbing, and HVAC permits depending on scope. We handle all permitting. If we need to dig the slab for new plumbing, $6-12K. Permits matter because the finished room has to meet the Florida Building Code, now in its 8th Edition (2023), for items like insulation, electrical, and ventilation before it counts as legal living space. In unincorporated areas such as Merritt Island, Viera, or Port St. John, the permit goes through Brevard County government in Viera rather than a city building department.
Yes if it meets code: minimum 70 sqft room size, egress window (or door) meeting code, proper ceiling height (7.5+ ft), HVAC, and electrical to code. We confirm code path during estimate. The county property appraiser usually catches converted space within 1-3 years.
Done right (preserves garage door aesthetic from exterior, professional finish work): typically neutral or slight positive impact. Done poorly (obvious conversion, no garage to sell to buyers who want one): can hurt resale 5-10% in some markets. Think about who buys homes in your neighborhood: if most nearby homes have garages and buyers there expect covered parking or storage, a conversion may narrow your pool of buyers. Keep the permit records and final inspection paperwork too, because buyers and appraisers are more cautious about converted space they cannot verify.
Yes. Either via the existing house, an exterior door cut into the new wall replacing the garage door, or a separate side entrance. Each has zoning implications - we check. The right choice depends on how the space will be used: an entrance through the house suits a family room or office, while a separate exterior door suits a guest suite or a business with visitors. Any new exterior door must carry a Florida Product Approval or local product approval, which can be searched through the Florida Building Commission.
Depends on Brevard zoning for your specific property and HOA rules. Some Brevard zones allow ADUs with permits, some don't. We check zoning before quoting an ADU conversion. Before paying for design work, ask your HOA for its rules in writing and confirm whether your property is inside a city or in unincorporated Brevard County, since that decides which zoning rules and permit office apply. Rental use can also affect your insurance and property taxes, so check both before committing to an ADU plan.
4-10 weeks active construction depending on scope. Bedroom-only: 4-6 weeks. With bathroom: 6-8 weeks. ADU buildout: 8-12 weeks. Two options: (1) frame in the opening with a real exterior wall (best long-term aesthetic), (2) keep the garage door but insulate/seal it for energy efficiency (cheaper, easier reversal).
Mini-split ductless (cheapest at $2.5-5K), extend existing house HVAC (best aesthetics, $3-7K), or dedicated central air (independent control, $5-9K). Mini-split is most common for converted garages. Two options: (1) frame in the opening with a real exterior wall (best long-term aesthetic), (2) keep the garage door but insulate/seal it for energy efficiency (cheaper, easier reversal).
Florida code minimum is R-13 walls + R-30 ceiling. Garage conversions are often the worst-insulated part of the house when finished poorly. We always over-spec insulation slightly for comfort. Adding sound insulation in the wall between converted space and main house: $800-2,500 depending on wall length.
Inspect for cracks and moisture issues. Install a vapor barrier if needed. Then finish with LVP, engineered hardwood, or carpet. Slab leveling sometimes needed. Gym needs reinforced floor (epoxy or rubber over concrete), good ventilation, mirrors, and sometimes specialty electrical for equipment.
Yes - "partial conversion" preserves storage or workshop area. Half the garage becomes finished living, half stays utility. Common for homeowners who want both. Brevard property tax may go up slightly because finished living space is taxed differently than garage.
Two options: (1) frame in the opening with a real exterior wall (best long-term aesthetic), (2) keep the garage door but insulate/seal it for energy efficiency (cheaper, easier reversal). Most clients choose option 1. Either via the existing house, an exterior door cut into the new wall replacing the garage door, or a separate side entrance.
Plumbing rough-in is the big variable. If existing house plumbing is nearby, $4-9K for a full bath. If we need to dig the slab for new plumbing, $6-12K. Half-bath simpler: $3-6K. Adding sound insulation in the wall between converted space and main house: $800-2,500 depending on wall length.
Yes - very common conversion in Brevard now. Office requires good lighting, cable/network drops, possibly soundproofing, and reliable HVAC. Cost: $10-25K depending on finish level. Done right (preserves garage door aesthetic from exterior, professional finish work): typically neutral or slight positive impact.
Notify your carrier of the conversion - the square footage of living space changes, which affects premium. Usually a small premium increase. Garage conversions typically don't cause issues with insurance. Call your agent before work starts rather than after, and ask how the added living space changes your dwelling coverage limit and whether anything is needed while construction is underway. Keep copies of the permit and final inspection, since an insurer may ask for proof the conversion was done to code.
Brevard property tax may go up slightly because finished living space is taxed differently than garage. The county property appraiser usually catches converted space within 1-3 years. If you want a sense of the impact before you build, you can ask the county property appraiser's office how converted garage space is typically assessed. Permitted work shows up in public permit records, so plan for the change rather than assume it will go unnoticed.
Optional but recommended for ADU or in-law suite use. Adding sound insulation in the wall between converted space and main house: $800-2,500 depending on wall length. The county property appraiser usually catches converted space within 1-3 years. Either via the existing house, an exterior door cut into the new wall replacing the garage door, or a separate side entrance.
Yes - popular conversion. Gym needs reinforced floor (epoxy or rubber over concrete), good ventilation, mirrors, and sometimes specialty electrical for equipment. Cost: $12-20K for nice gym buildout. Notify your carrier of the conversion - the square footage of living space changes, which affects premium.
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